Use the "roku 4k tv" profile for streaming to the nu series.At least untill they make the new profile. I have a un75nu7100 and this is working for me for 4k UHD hevc mkv files with truehd and dts audio.

The main issue is DTS audio-my samsung doesn't like it.

Another workaround is on this forum, regarding editing the profiles.xml which I can confirm also works but I'm having trouble finding it the thread

I should also point out that 99% of the problem in regards to transcoding files to nu7100 is the audio. I've tested by removing the audio from 10 different 4k mkvs and the TV plays all of them. Which tells that the audio is the problem. If anyone is proficient in MKVToolnix and are desperate to test the tv, simply open file in MKVToolnix and remove the first audio, then click Start Muxing or Start Remuxing I forget which offhand. Then it'll spit out a compatible mkv that plays on the TV (if there's a second audio-check with media info) The reason this works is because most of the 4k mkvs I come across with torrents have a 2nd audio which 99% of the time is AC3 in which the nu7100 series likes. The 1st audio is usually something the TV doesn't like such as DTS, DTSX Truehd Etc.

I'm no pro but I have spent the last two weeks working on serviio for the nu7100. I've got it streaming from Synology-docker, and windows 10 working great.

I hope this helps somebody. I agoninized over this for weeks.

And BTW, I'm pretty sure the serviio devs make profiles as fast as they can. I'm not sure if they are even paid, but we need to be patient and grateful they even make new profiles because I know they aren't getting rich from us

Very few TVs support any audio codecs other than PCM and AC3 (Dolby Digital). Some older sets don't even support AC3 from an external source. But as mentioned, there might be other profiles that offer sufficient processing to handle the media you have. Testing other profiles is the first and best thing to try when you have issues with playback, particularly with a Smart TV.

Unfortunately, someone has to have a particular piece of equipment (such as an N series Samsung) to be able to create a profile. But if you identify files that will play and then files that won't, we can assist with suggestions for creating a user profile that you can save and won't get lost when Serviio is updated.

Looking at the specs it seems to play most mainstream media natively, with the exception of DTS audio. This is pretty common in newer TV's, i expect as the manufacturer can avoid paying licensing costs DTS.

Bearing in mind I haven't got this TV to test at all, I have constructed the attached profile based on simple DTS remuxing, and borrowing the header and detection blocks from the Samsung J profile. Detection may not work so you may have to manually assign the profile.

Save the attached file to your Serviio\config folder. In Serviio Console, Status tab, stop the Server (button at the bottom) and then restart it. This will reload the profiles. Check that the profile is assigned to your TV (you may need to refresh the tab) and if not manually assign it (profile is called "Samsung N Series (2018)").

I loaded the profile and I could see it. Assigned teh profile to my Q series TV ( I know this is a N series profile) and tried to watch some MKV with DTS enabled. MKV did not load. Samsung DNLA browser did not open the movie. Just got spinning blue circle.

Not sure I can help. I don't have a Samsung TV but from the forums it appears some of the models in recent times had some issues handling transcoded file. I think the Q series was one of them.Others may be able to help.

Yes, my JU series won't play transcoded files. At least it couldn't last time I tried. I gave up on the Samsung internal player long ago. I first used a Roku player, and now have an Nvidia Shield on that TV. The Shield plays everything without transcoding, and provides all lossless audio codecs to my AVR. And my wife still uses the Sony BD player that's connected to it as well. Neither of us could deal with the Samsung functionality any longer. I couldn't even tell you the last time I used any app in the TV itself.